Amalgamating-machine.



No. 725,809. PATENTED APR. 14, 1903. A. H. WOODRUFF AMALGAMATINGMACHINE.

APPLIOATION FILED JULY 7, 1902.

NO MODEL.

WITNESSES: I Q INVENTOR km Q\.%.6Q' \-c W ATTORNEY.

UNITED STATES PATENT OFFFICE.'I

AMOS H. WOODRUFR'OF cnio'Aco, ILLINOIS.

AMALGAMATING-MACHIN E.

SPECIFICATION forming part of Letters Patent N 0. 725,309, dated April14, 1903.

Application filed July 7,1902.; serinuo. 114,561. (No model.)

T0 aZZ whom it may concern:

Be it known that I, AMOS H. WOODBUFF, a citizen of the United States,residing at Chicago, in the county of Cook and State'of Illi-g nois,have invented certain new and useful Improvements inAmalgamating-lvlachines, whichare fully set forth in the followingspecification, reference being had to the accompanying drawings, forminga part hereof, and in which Figure 1 shows, in side elevation and partlyin section, my improved amalgamating-machine. Fig. 2 shows Fig. 1 on atransverse sectional plane at 00 of Fig. l, the cylinder be-- ingleftentire, only the upper and front quarters of the surrounding or screencylinders being removed, the lower front quarters of said cylindersbeing left in place, while the entire surrounding casing or shell isshown in section. Fig. 3 shows, on an enlarged scale, a transverse viewof Fig. 2 on the plane 'y y of Fig. 2.

Like reference-letters denote like parts.

The object of my invention is to improve the construction and operationof amalgamat,

lug-machines used in extracting gold from its dross or rock in itscrushed condition by either To attain said the dry or the wet process.

desirable ends, I construct my said new device in substantially thefollowing manner, namely:

Around the usual amalgamating-cylinder b, which revolves on a shaft 0,and in a trough j, containing mercury h, are placed separably and.removably connected and foraminated 'half-cylinderse and f, held inplace by clamps neously. The covering 9 makes closed airpassages overthe table or tables a.

What I claim is- T The combination with an amalgamatingcylinder, offoraminated, superimposed cylinders, on said amalgamating-cylinder,longitudinally separable into halves, substantially as specified.

AMOS H. WOODRUFF.

Vitnesses:

WM. ZIMMERMAN,

CARL A. LOTHGREN.

